
#ifndef OPERA_H
#define OPERA_H

#include <BVector>
#include <BNode>
#include <BScene>

using namespace BWE;

class Opera : public BObject
{
public:
	virtual bool redo() = 0;
	virtual bool undo() = 0;
};

typedef BHolder<Opera>		OperaHolder;
typedef BArray<Opera*>		OperaArray;

#endif